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Halberstadt D.I


Single-Seat Biplane Fighter Prototype


Aviation / Aerospace

The Halberstadt D.I fighter prototype failed to impress German authorities and this limited the design to just two prototypes.



Authored By: Staff Writer | Last Edited: 7/31/2019 | Content ©www.MilitaryFactory.com
Halberstadter Flugzeugwerke (Halberstadt) of German made its first foray into fighter aircraft design with the "D.I" of 1915. The design was a dimensionally smaller version of the company's B.II product and featured many qualities of combat aircraft of the period - an over-under biplane wing structure, fixed undercarriage and open-air cockpit. The D.I initially failed to impress German authorities and the line ended at just two prototypes completed - but this work served to produce the refined D.II model (detailed elsewhere on this site).

The D.I differed from the earlier B.II in that it held smaller-area wings and these appendages were staggered. As a combat aircraft, it was also finalized with a single 7.92mm MG08 machine gun in a fixed, forward-firing mounting. The engine was fitted to the nose in the usual way and drove a two-bladed propeller unit. The radiator element protruded noticeably out of the nose and restricted forward vision some. The fuselage showcased slab sides and the tail was of conventional arrangement.

The first of two prototypes emerged for testing with an Argus As II engine of 120 horsepower and a first-flight was recorded in late-Autumn of 1915. The second followed with a Mercedes D.I of 100 horsepower. Some promise was shown in the latter offering to the point that a twelve-strong order was placed in March of 1916. However, during the evaluation period, the aircraft was found lacking in certain qualities which, when refined, led to the developed "D.II" detailed elsewhere on this site.

From the recorded work, the D.I showcased a wingspan of 28.9 feet, an empty weight of 1,210lb and a MTOW of 1,630lb. Much of its performance figures are unknown.


Specifications



Year:
1916
Status
Cancelled
Crew
1
[ 2 Units ] :
Halberstadt - German Empire
National flag of German Empire German Empire
- Fighter
- X-Plane / Developmental
Width:
28.87 ft (8.8 m)
(Showcased structural dimension values pertain to the Halberstadt D.I production model)
Empty Weight:
1,213 lb (550 kg)
MTOW:
1,653 lb (750 kg)
(Diff: +441lb)
(Showcased weight values pertain to the Halberstadt D.I production model)
Second Prototype: 1 x Mercedes D.I engine developing 100 horsepower and driving a two-bladed propeller at the nose.
(Showcased powerplant information pertains to the Halberstadt D.I production model)
Max Speed:
93 mph (150 kph; 81 kts)
Service Ceiling:
13,123 feet (4,000 m; 2.49 miles)
Rate-of-Climb:
728 ft/min (222 m/min)
(Showcased performance values pertain to the Halberstadt D.I production model; Compare this aircraft entry against any other in our database)
1 x 7.92mm MG08 machine gun (starboard side fuselage mounting).
(Showcased armament details pertain to the Halberstadt D.I production model)
D.I - Series Designation; two prototypes completed.
D.I V1 - First prototype with Argus As II engine of 120 horsepower.
D.I V2 - Second prototype with Mercedes D.I engine of 100 horsepower.
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